Photosynthesis In Higher Plants Question 101

Question: Two plants A and B are supplied with $ CO_2 $ with $ H_2O^{18} $ and $ CO_2^{18} $ with $ H_2O $ respectively which of the following plant releases O18 type oxygen in photosynthesis [CPMT 2000]

Options:

A) A plant

B) B plant

C) Both [a] and [b]

D) First [a] and then [b]

Show Answer

Answer:

Correct Answer: A

Solution:

During photosynthesis $ O_2 $ evolved by the hydrolysis of water.

If $ H_2O^{18} $ is used in ?A? plant then it became true that $ O^{18} $ type oxygen evolved from ?A? plant during photosynthesis.